The south-west of Berlin had to make do without electricity for days. And even when the power is back on, a charged powerbank is worth its weight in gold in an emergency. Stiftung Warentest tested 24 power banks with prices ranging from just under 30 to around 100 euros. The practical test confirms this: All of them can charge compatible laptops as well as smartphones and tablets...
Cellularline Rocket 20000
20000 mAh, 65 W, 74 WhMore than 10 pieces in stock at supplier
Product details
Rocket 20000 is the power bank that combines technology and design. Perfect for charging all laptops, tablets, and smartphones, it delivers up to 65 W of power to ensure longer charging times, such as providing an additional 34 hours of charge for laptops. This charger is equipped with two USB-C ports and one USB port. The USB port charges at 18 W, while the USB-C ports charge at 65 W and 20 W, respectively. The LCD display shows the charging speed of the connected devices and the remaining charge of the power bank itself. The design is crafted to provide a pleasant feel and optimal grip thanks to the fabric and soft-touch coating.
Additional properties | LED battery status indicator, Suitable for notebooks |
Charging technology | Power Delivery |
USB ports | 1 x USB, 2 x USB-C |
Capacity | 20000 mAh |
Power capacity | 74 Wh |
Weight | 545 g |
Item number | 45130069 |
Manufacturer | Cellularline |
Category | Powerbanks |
Manufacturer No. | 60803 |
Release date | 23.4.2024 |
Colour | Black, Grey |
Exact colour description | Black, Grey |
Material group | Plastic |
Material | Plastic |
Powerbank type | Powerbank |
Additional properties | LED battery status indicator, Suitable for notebooks |
Min. output voltage | 5 V |
Max. output voltage | 20 V |
Output voltage | 5 - 20 V |
Electric current output | 3 A |
Charging technology | Power Delivery |
Nominal power | 65 W |
USB ports | 1 x USB, 2 x USB-C |
Battery type | Lithium |
Capacity | 20000 mAh |
Power capacity | 74 Wh |
Battery voltage | 3.70 V |
Country of origin | China |
CO₂ emissions | 3.08 kg |
Climate contribution | CHF 0.11 |
Scope of delivery | USB Type-C to USB Type-C cable |
Length | 8.60 mm |
Height | 142 mm |
Weight | 545 g |
Length | 19.80 cm |
Width | 12 cm |
Height | 7.50 cm |
Weight | 540 g |
Compare products
Goes with
Reviews & Ratings
Warranty score
How often does a product of this brand in the «Powerbanks» category have a defect within the first 24 months?
Source: Digitec Galaxus- 29.MediaRange1.6 %
- 29.Onit1.6 %
- 31.Cellularline1.7 %
- 31.Choetech1.7 %
- 31.Forever1.7 %
Warranty case duration
How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?
Source: Digitec Galaxus- 1.XtremeMac0 days
- 37.TOP1 day
- 38.Usams2 days
- 39.Sp Connect10 days
- 40.Cellularline21 days
Return rate
How often is a product of this brand in the «Powerbanks» category returned?
Source: Digitec Galaxus- 7.Patona0.7 %
- 9.Onit0.8 %
- 10.Cellularline0.9 %
- 10.Intenso0.9 %
- 10.LogiLink0.9 %